CN109838496B

CN109838496B - Engine mount for vehicle

Info

Publication number: CN109838496B
Application number: CN201810959905.XA
Authority: CN
Inventors: 金承原; 金孝锡
Original assignee: Hyundai Motor Co; Kia Motors Corp
Current assignee: Hyundai Motor Co; Kia Corp
Priority date: 2017-11-24
Filing date: 2018-08-22
Publication date: 2021-11-26
Anticipated expiration: 2038-08-22
Also published as: US10618397B2; KR20190060301A; KR102463426B1; US20190160933A1; CN109838496A

Abstract

The present invention relates to an engine mount for a vehicle. The engine mount includes a rubber component connected between a vehicle body and an engine. The fluid seal assembly is removably assembled to the rubber assembly, allowing for adjustment of the engine mount by removing the fluid seal assembly while the engine remains connected to the engine mount.

Description

Engine mount for vehicle

Technical Field

The present invention relates to an engine mount for a vehicle, and more particularly, to an engine mount for a vehicle having a structure in which a fluid seal assembly is detachable from a rubber assembly connected between a vehicle body and an engine.

Background

Generally, when a power system including an engine and a transmission is installed in an engine room of a vehicle, an engine mount for vibration control is applied in a position where the engine is installed and supported. The engine mount has different powertrain vibration characteristics for each wheel model and is one of the components that need to be adjusted for vibration control based on the specifications of the other systems (e.g., suspension, body, etc.).

Since each customer perceives the vibration characteristics differently and has different preferences for the vibration characteristics, adjustments (e.g., modifications) are made after mass production and vehicle delivery, such as replacing the original engine mounts with engine mounts having different specifications. This adjustment of the engine mount is cost effective because it serves as a direct vibration transfer system.

However, it is often difficult to adjust the engine mount because the engine needs to be separated from the engine compartment and the engine mount needs to be completely disassembled to install new adjustment products, which requires specialized machinery and specialized equipment. For example, as shown in fig. 11, when the engine mount 100 is mounted on the vehicle body 102, the engine 200 is disassembled by removing the support bracket 202 connected between the upper end portion of the engine mount 100 and the engine 200, and then the engine mount 100 is disassembled from the vehicle body 102 to mount a new adjustment product. Therefore, adjustment of the engine mount requires specialized machinery and specialized equipment. Therefore, it is not easy for a general customer to adjust the engine mount.

The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person skilled in the art.

Disclosure of Invention

An engine mount for a vehicle may include a rubber component connected between a vehicle body and an engine, and a fluid seal component removably assembled to the rubber component to adjust (e.g., modify) the engine mount by only removing the fluid seal component while the engine remains connected to the engine mount.

In one aspect, the present disclosure provides an engine mount for a vehicle that may include a rubber assembly having a rubber housing connected between a vehicle body and an engine, and a fluid seal assembly having a fluid housing detachably assembled in the rubber housing of the rubber assembly. The fluid seal assembly may be detached from the upper portion of the rubber assembly to adjust the engine mount.

In an exemplary embodiment, the rubber assembly may include a rubber housing having an upper open structure, the rubber housing being connected between the vehicle body and the engine, and the first main rubber is vulcanized on a bottom surface of the rubber housing while surrounding the first core having the core bolt. The inner diameter surface of the rubber housing may include a locking guide groove extending downward from a top end portion of the rubber housing, and a locking hole extending in a vertical direction from a lower end portion of the locking guide groove. Further, a core bolt may protrude from the bottom of the rubber housing to be coupled to the vehicle body mounting bracket. The outer diameter surface of the rubber housing may be protrudingly provided with a coupling end portion coupled to the engine mounting bracket.

The fluid seal assembly may include: a fluid housing removably inserted through an upper opening of the rubber housing; a diaphragm provided at an upper end portion within the fluid housing to maintain airtightness of an upper side of the fluid; a hole structure having a fluid flow path in a vertical direction and stacked on the bottom of the diaphragm; a diaphragm stacked at the central opening of the hole structure to separate the upper and lower fluid chambers; and a second main rubber member having an outer circumferential surface adhered to an inner diameter surface of the fluid housing while an edge portion of an upper surface of the second main rubber member is stacked and supported on an edge of a bottom surface of the hole structure to maintain airtightness of a lower side of the fluid, and having a bottom surface abutting an upper surface of the first main rubber member of the rubber assembly.

Further, the lower end portion of the fluid housing may be integrally formed with a plurality of hooks that are locked to an edge of the bottom surface of the second main rubber member. The edge portion of the second main rubber member includes a second core, and a lower end portion of the second core may protrude through a bottom surface of the second main rubber member to become an object to lock the plurality of hooks. The outer diameter surface of the fluid housing may be slid along the locking guide groove of the rubber housing and then may be integrally formed with a locking protrusion, which is locked and inserted into the locking hole. Additionally, the outer surface of the fluid housing may include a handle that rotates the fluid housing in a locking or unlocking direction.

Drawings

The above and other features of the present invention will now be described in detail with reference to certain exemplary embodiments thereof as illustrated in the accompanying drawings, which are given by way of illustration only, and thus are not limiting of the invention, wherein:

fig. 1 is a perspective view illustrating a process of manufacturing a rubber assembly for an engine mount of a vehicle according to an exemplary embodiment of the present invention.

Fig. 2 is a perspective view illustrating a rubber assembly for an engine mount of a vehicle according to an exemplary embodiment of the present invention;

fig. 3 is a perspective view illustrating a process of assembling a fluid seal assembly for an engine mount of a vehicle according to an exemplary embodiment of the present invention;

fig. 4 is a perspective view illustrating a process of mounting a fluid seal assembly on a rubber assembly of an engine mount for a vehicle according to an exemplary embodiment of the present invention;

fig. 5 is a sectional view illustrating a state in which a fluid seal assembly according to an exemplary embodiment of the present invention is assembled with a rubber assembly for an engine mount of a vehicle;

fig. 6 is a sectional view illustrating a state in which a fluid seal assembly according to an exemplary embodiment of the present invention is detached from a rubber assembly of an engine mount for a vehicle;

fig. 7 is a sectional view showing an example in which a secondary core according to an exemplary embodiment of the present invention is applied to a second main rubber member of a fluid seal assembly;

fig. 8A is a perspective view illustrating a state in which an engine mount for a vehicle according to an exemplary embodiment of the present invention is installed.

Fig. 8B is a perspective view illustrating a state where an engine mount for a vehicle according to an exemplary embodiment of the present invention is detached;

fig. 9 and 10 are graphs of vibration noise measurement results of a related art compared with an engine mount for a vehicle according to an exemplary embodiment of the present invention;

fig. 11 is a schematic view showing a process of replacing an engine mount according to the related art.

It is to be understood that the appended drawings are not to scale, showing a somewhat simplified representation of various features illustrative of the basic principles of the invention. The specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the particular application and environment of use contemplated. In the drawings, reference numerals refer to identical or equivalent parts of the invention throughout the several views of the drawings.

Detailed Description

It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles such as passenger automobiles including Sport Utility Vehicles (SUVs), large passenger cars, trucks, various commercial vehicles, watercraft including a variety of boats, ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-petroleum sources). As referred to herein, a hybrid vehicle is a vehicle having two or more power sources, such as a vehicle having both gasoline power and electric power.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, values, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, values, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed terms.

Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with the exemplary embodiments, it will be understood that this description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. According to the present invention, the engine mount may include a rubber member connected between the vehicle body and the engine and a fluid seal member detachably assembled on an upper portion of the rubber member, thereby allowing only the fluid seal member to be detached, thereby facilitating an operation of adjusting the engine mount.

Fig. 1 and 2 illustrate a rubber assembly and a manufacturing process in a component for an engine mount of a vehicle according to the present invention. Reference numeral 110 denotes a rubber member. The rubber assembly 110 may include a rubber housing 112, a first core 114 having a core bolt 113 disposed within the rubber housing 112, and a first main rubber 115 vulcanized to abut a bottom surface of the rubber housing 112 while surrounding the first core 114.

In particular, the rubber housing 112 may be formed in a cylindrical structure in which an upper portion is opened and a bottom surface includes a hole through which the core bolt 113 may protrude. The rubber housing 112 may be connected between the vehicle body and the engine. The first core 114 may be disposed within the first main rubber 115 and serve as a skeleton of the first main rubber 115, and the core bolt 113 may be integrally embedded within the first core 114 when the first core 114 is manufactured.

The core bolt 113 may protrude through a hole provided on the bottom surface of the rubber housing 112. As shown in fig. 5, the core bolt 113 protruding from the bottom surface of the rubber housing 112 may be bolted to a vehicle body mounting bracket 130 coupled with the vehicle body. The first main rubber 115 may be vulcanized on the bottom surface of the rubber housing 112 while surrounding the outer surface of the first core 114 to absorb and cancel X, Y and vibration in the Z direction, such as vibration generated from the running of the vehicle and vibration from the input of the engine.

In particular, in order to insert and lock the fluid seal assembly 120 with respect to the rubber assembly 110, a linear locking guide groove 116 and a locking hole 117 may be included at least three positions along the circumferential direction of the inner diameter surface of the rubber housing 112, the linear locking guide groove 116 extending downward from the top end portion of the rubber housing 112 by a predetermined distance, and the locking hole 117 extending in the vertical direction from the lower end portion of the locking guide groove 116. The outer diameter surface of the rubber housing 112 may be protrudingly provided with a coupling end portion that may be bolted to an engine mounting bracket 132 coupled with the engine.

Fig. 3 illustrates a fluid seal assembly for an engine mount of a vehicle and an assembly process thereof according to an exemplary embodiment of the present invention, and reference numeral 120 denotes the fluid seal assembly. The fluid seal assembly 120 may include a fluid housing 121, the fluid housing 121 being removably secured to the rubber housing 112 of the rubber assembly 110. As described below, the lower end portion of the fluid housing 121 may be integrally formed with a plurality of hooks 127, and the plurality of hooks 127 may be locked to the second core 126, the second core 126 protruding through and coupled with the bottom surface of the second main rubber 125.

In addition, the outer diameter surface of the fluid housing 121 may be integrally formed with a locking protrusion 128, and the locking protrusion 128 may slide along the linear locking guide groove 116 of the rubber housing 112 and then may be locked into the locking hole 117. The upper surface of the fluid housing 121 may be integrally formed with a handle 129, the handle 129 being configured to rotate the fluid housing 121 in a locking or unlocking direction to insert the fluid seal assembly 120 into the rubber assembly 110 and then lock the fluid seal assembly 120, or unlock the fluid seal assembly 120.

Each of the components constituting the fluid seal assembly may be stacked and assembled in the fluid housing 121 having the above-described structure. First, the upper end portion inside the fluid housing 121 may include a diaphragm 122 for maintaining airtightness of the upper side of the fluid. Then, a hole structure 123 (e.g., a fluid flow path between an upper fluid chamber and a lower fluid chamber) including a fluid flow path in a vertical direction may be stacked on the bottom of the diaphragm 122 while being spaced apart from the diaphragm 122.

Subsequently, a membrane 124 separating the upper and lower fluid chambers may be stacked on the central opening portion of the hole structure 123. Then, the second main rubber 125 may be stacked on the bottom edge of the hole structure 123. In particular, the outer circumferential surface of the second main rubber 125 may be adhered to the inner diameter surface of the fluid housing 121, and the edge portion of the upper surface of the second main rubber 125 may be stacked and supported at the bottom edge of the hole structure, thereby maintaining the airtightness of the lower side of the fluid.

The second core 126 may be embedded in an edge portion of the second main rubber 125, and a lower end portion of the second core 126 may protrude downward through a bottom surface of the second main rubber 125. The lower end portion of the second core 126 may partially protrude through the bottom surface of the second main rubber 125 to allow the hook 127 of the fluid housing 121 to be locked to the second core 126 made of the metal material, not to the second main rubber 125 having elasticity, and thus, the hook 127 may be securely locked.

The space between the diaphragm 122 and the diaphragm 124 may be formed as an upper fluid chamber 120-1, and the space between the diaphragm 124 and the second main rubber 125 may be formed as a lower fluid chamber 120-2. Since fluid can be injected into the upper fluid chamber 120-1 or the lower fluid chamber 120-2, the fluid can be injected by perforating the fluid housing 121 with a hole and aperture arrangement 123. Then, the fluid may be injected into the upper fluid chamber 120-1 or the lower fluid chamber 120-2 through the fluid flow path of the orifice structure 123 and the small hole formed on the fluid housing 121, and the orifice structure 123 may be sealed with the steel ball.

Fig. 4 illustrates a process of mounting a fluid seal assembly on a rubber assembly of an engine mount for a vehicle according to an exemplary embodiment of the present invention. The fluid seal assembly 120 may be detachably mounted on the rubber assembly 110 manufactured as described above.

The fluid housing 121 may be inserted through an upper opening of the rubber housing 112, and the locking protrusion 128 of the fluid housing 121 may be inserted into the linear locking guide groove 116 of the rubber housing 112 while vertically mating (e.g., aligning) with the linear locking guide groove 116. Accordingly, when the locking protrusion 128 slides down the linear locking guide groove 116 and then the handle 129 grasping the fluid housing 121 is rotated in the locking direction, the locking protrusion 128 may be locked into the locking hole 117 to allow the fluid seal assembly 120 to be mounted on the rubber assembly 110, as shown in fig. 5.

Conversely, when the fluid seal assembly 120 is separated from the rubber assembly 110, the handle 129 of the fluid housing 121 may be grasped to rotate in an unlocking direction, and then the fluid housing 121 may be lifted (e.g., withdrawn) to allow the fluid seal assembly 120 to be separated from the rubber assembly 110, as shown in fig. 6. As described above, when the installation of the fluid seal assembly 120 on the rubber assembly 110 is completed, the bottom surface of the second main rubber 125 may abut the upper surface of the first main rubber 115, as shown in fig. 5.

After the installation of the fluid seal assembly 120 on the rubber assembly 110 is completed, the core bolt 113 may be bolted to a vehicle body mounting bracket 130 coupled with the vehicle body, and the coupling end 118 formed on the outer diameter surface of the rubber housing 112 may be bolted to an engine mounting bracket 132 coupled with the engine, thereby allowing the engine mount to be installed by being connected between the engine and the vehicle body, as shown in fig. 8A and 8B. Therefore, the first main rubber member 115 of the rubber assembly 110 can absorb and cancel X, Y and vibration in the Z direction, such as vibration generated from the running of the vehicle and vibration from the input of the engine.

In addition, the second main rubber 125 of the fluid seal assembly 120 may absorb and cancel vibrations in the Z-direction, such as vibrations from vehicle travel and vibrations from engine input. When the second main rubber 125 is vertically deformed, the fluid of the upper fluid chamber 120-1 may pass through the fluid flow path of the orifice structure 123 to move to the lower fluid chamber 120-2, or the fluid of the lower fluid chamber 120-2 may pass through the fluid flow path of the orifice structure 123 to move to the upper fluid chamber 120-1, thereby absorbing and eliminating the vibration in the Z direction together with the second main rubber 125.

In addition to sealing the fluid, the second main rubber 125 of the fluid sealing assembly 120 may be used for vibration control in the Z direction (e.g., the vertical direction of the vehicle body), and the first main rubber 115 of the rubber assembly 110 may slide on the second main rubber 125 while controlling vibration in the X direction (e.g., the vehicle length direction or the longitudinal direction) and the Y direction (e.g., the vehicle width direction or the lateral direction).

Meanwhile, when the second main rubber 125 of the fluid seal assembly 120 is vertically deformed by vibration and absorbs and cancels the vibration, the amount of vertical deformation may be excessive and a loss factor for absorbing the vibration is generated. Therefore, as shown in fig. 7, a separate auxiliary core 125-1 may be provided in a central portion within the second main rubber 125 to prevent a loss factor from being generated.

As a test example of the present invention, a rush acceleration test was performed on the engine mount of the present invention, in which the fluid seal assembly was detachably mounted to the rubber assembly, and a noise generation test was performed in an idling state. The test results are shown in fig. 9 and 10.

The rapid acceleration test results shown in fig. 9 show that the engine mount of the present invention eliminates vibration noise better than the engine mount of the related art. In addition, the idle-state noise generation test result shown in fig. 10 shows that the engine mount of the present invention eliminates the high-frequency component of the vibration noise better than the engine mount of the related art. Test results show that the engine mount of the present invention can exhibit performance for eliminating high frequency vibration noise. Meanwhile, although the vehicle is driven when the fluid seal assembly is disassembled according to a customer's preference (e.g., a customer intending to idle vibration), vibration control may be performed only by the rubber assembly. The present invention can have the following effects.

First, it requires only disassembly of the fluid seal assembly to allow for efficient engine mount adjustment while the engine remains connected to the engine mount.

Second, since it is not necessary to replace the entire engine mount when adjusting the engine mount, the cost of the adjusting parts can be reduced due to the sharing of the parts.

Third, the vibration control characteristic values and the optimal vibration control characteristic values may be changed by physically coupling different types of fluid seal assemblies with the rubber assembly.

Fourth, engine vibration may be controlled by controlling X, Y and vibration in the Z direction in the rubber component, and further by controlling vibration in the Z direction in the fluid seal assembly.

Fifth, vibration control may also be performed by only the rubber component while removing the fluid seal assembly according to the customer's preference (e.g., a customer intending to idle vibration).

In addition, although the exemplary embodiments of the present invention have been described above in detail, the scope of the present invention is not limited thereto. Accordingly, various changes and modifications may be made by those skilled in the art which utilize the basic concepts of the invention as defined in the following claims without departing from the scope of the invention.

Claims

1. An engine mount for a vehicle, comprising:

a rubber assembly having a rubber housing connected between a vehicle body and an engine; and

a fluid seal assembly having a fluid housing removably inserted into a rubber housing of the rubber assembly,

wherein the fluid seal assembly is configured to separate from an upper portion of the rubber assembly for adjusting the engine mount,

the upper portion of the rubber housing is open,

the rubber assembly includes a first main rubber member vulcanized on a bottom surface of the rubber housing while surrounding a first core having a core bolt,

the fluid seal assembly includes:

a fluid housing removably inserted through an upper opening of the rubber housing;

a diaphragm provided at an upper end portion within the fluid housing to maintain airtightness of an upper side of the fluid;

a hole structure having a fluid flow path in a vertical direction and stacked on the bottom of the diaphragm;

a diaphragm stacked at the central opening of the hole structure to separate the upper and lower fluid chambers; and

a second main rubber member having an outer circumferential surface adhered to an inner diameter surface of the fluid housing while an edge portion of an upper surface of the second main rubber member is stacked and supported on an edge of a bottom surface of the hole structure to maintain airtightness of a lower side of the fluid, and having a bottom surface abutting an upper surface of the first main rubber member of the rubber assembly.

2. The engine mount for a vehicle according to claim 1, wherein an inner diameter surface of the rubber housing includes a lock guide groove extending downward from a top end portion of the rubber housing, and a lock hole extending in a vertical direction from a lower end portion of the lock guide groove.

3. The engine mount for a vehicle according to claim 1, wherein the core bolt protrudes from a bottom of the rubber housing to be coupled to a vehicle body mounting bracket.

4. The engine mount for a vehicle according to claim 1, wherein an outer diameter surface of the rubber housing is protrudingly provided with a coupling end portion that is coupled to an engine mounting bracket.

5. The engine mount for a vehicle according to claim 1, wherein a plurality of hooks are integrally formed at a lower end portion of the fluid housing, the plurality of hooks being locked to an edge of a bottom surface of the second main rubber member.

6. The engine suspension for a vehicle according to claim 5, wherein the edge portion of the second main rubber member includes a second core, a lower end portion of which protrudes through a bottom surface of the second main rubber member and includes an object that locks with the plurality of hooks.

7. The engine mount for a vehicle according to claim 1, wherein an outer diameter surface of the fluid housing is integrally formed with a locking protrusion that slides along a locking guide groove of the rubber housing and then is inserted into a locking hole.

8. The engine mount for a vehicle of claim 1, wherein an outer surface of the fluid housing includes a handle that rotates the fluid housing in a locking or unlocking direction.